Medical device having a rotatable shaft

Abstract

The invention provides design, material, manufacturing method, and use alternatives for medical devices. An example medical device includes a first elongated member having a proximal end, a distal end, and a lumen extending therebetween and a second elongated member having a proximal end, a distal end, and a lumen extending therebetween. The proximal end of the second elongated member may be disposed adjacent to the distal end of the first elongated member forming an actuatable junction. In some cases, the actuatable junction may be actuatable between a first state and a second state. When in the first state, the first elongated member may be rotatable relative to the second elongated member and, when in the second state, the first elongated member may be fluidly sealed to the second elongated member.

1. A medical device comprising:
 a first elongated member having a proximal end, a distal end, and a lumen extending therebetween; 
 a second elongated member having a proximal end, a distal end, and a lumen extending therebetween, wherein the proximal end of the second elongated member is disposed adjacent to the distal end of the first elongated member forming a junction; and 
 a seal disposed adjacent to the first elongated member and the second elongated member at the junction, the seal being actuatable between a first state and a second state while the first and second elongated members are connected at the junction, wherein, in the first and second states, the first elongated member is rotatable relative to the second elongated member and, in the first state, the first elongated member is non-fluidly sealed to the second elongated member and, in the second state, the first elongated member is fluidly sealed to the second elongated member, wherein the lumen of the second elongated member defines, at least in part, one or more guidewire lumens, wherein the guidewire lumen has a distal port adjacent to the distal end of the second elongated member and a proximal port, wherein the proximal port is distal of the junction. 
 
     
     
       2. The medical device of  claim 1  wherein the seal is actuatable between the first state and second state by a pressure. 
     
     
       3. The medical device of  claim 2  wherein the pressure is provided by a fluid flowing through the lumen of the first elongated member and/or the second elongated member. 
     
     
       4. The medical device of  claim 1  wherein the seal is electrically actuated between the first state and the second state. 
     
     
       5. The medical device of  claim 4  wherein the seal includes an electroactive polymer that is configured to expand and/or contract in response to an electrical potential. 
     
     
       6. The medical device of  claim 1  wherein the second elongated member includes an inflatable balloon adjacent to the distal end, wherein the balloon is fluidly connected to the proximal end of the first elongated member. 
     
     
       7. The medical device of  claim 6  further comprising a stent disposed about at least a portion of the balloon. 
     
     
       8. The medical device of  claim 7  wherein the stent is a bifurcated stent. 
     
     
       9. A medical device comprising:
 a first elongated member having a proximal end, a distal end, and a lumen extending therebetween; 
 a second elongated member having a proximal end, a distal end, and a lumen extending therebetween, wherein one of the proximal end or the distal end of the second elongated member is disposed within at least a portion of the lumen of the first elongated member; 
 a first and second retainer disposed on an inner surface of the first elongated member with the lumen of the first elongated member; 
 a third retainer disposed on an outer surface of the second elongated member, wherein the third retainer is disposed longitudinally between the first and second retainer; and 
 wherein the first retainer, second retainer, and/or third retainer form a seal that is actuatable between a first state and a second state while the first and second elongated members are connected, wherein when in the first and second states, the first elongated member is rotatable relative to the second elongated member and, when in the first state, the first elongated member is non-fluidly sealed to the second elongated member and, when in the second state, the first elongated member is fluidly sealed to the second elongated member, wherein the seal is actuated by longitudinally moving the first and second elongate members away from each other. 
 
     
     
       10. The medical device of  claim 9  wherein the seal is actuatable between the first state and second state by a pressure. 
     
     
       11. The medical device of  claim 10  wherein the pressure is provided by a fluid flowing through the lumen of the first elongated member and/or the second elongated member. 
     
     
       12. The medical device of  claim 9  wherein the seal is electrically actuated between the first state and the second state. 
     
     
       13. The medical device of  claim 12  wherein at least one of the first retainer, second retainer, and third retainer includes an electroactive polymer that is configured to expand and/or contract in response to an electrical potential. 
     
     
       14. The medical device of  claim 9  wherein the second elongated member includes one or more guidewire lumens disposed therein, wherein the guidewire lumen includes a distal port and a proximal port, wherein the proximal port is distal of the seal. 
     
     
       15. The medical device of  claim 9  wherein the third retainer and at least one of the first retainer and second retainer interlocks. 
     
     
       16. The medical device of  claim 9  wherein the seal formed by the first retainer, second retainer, and/or third retainer is a friction fit seal. 
     
     
       17. A catheter comprising:
 a first elongated member having a proximal end, a distal end, and a lumen extending therebetween; 
 a second elongated member having a proximal end, a distal end, and a lumen extending therebetween, wherein the proximal end of the second elongated member is disposed adjacent to the distal end of the first elongated member forming a junction, and the distal end of the second elongated member has an inflatable balloon disposed thereon; and 
 a seal disposed adjacent to the first elongated member and the second elongated member at the junction, the seal being actuatable between a first state and a second state by a fluidic pressure while the first and second elongated members are connected at the junction, wherein the first elongated member is rotatable relative to the second elongated member in the first and second states, and, in the first state, the first elongated member is non-fluidly sealed to the second elongated member, and, in the second state, the first elongated member is fluidly sealed to the second elongated member. 
 
     
     
       18. The catheter of  claim 17  wherein the distal end of second elongated extends distally of the distal end of the first elongated member. 
     
     
       19. The catheter of  claim 17  wherein the second elongated member includes a proximal port and a distal port with a second lumen extending therebetween, wherein the proximal port is distal of the junction. 
     
     
       20. The catheter of  claim 19  wherein the second lumen is a guidewire lumen. 
     
     
       21. The catheter of  claim 17 , wherein the seal limits longitudinal movement of the first and second elongated members relative to each other in the first and second states.